Which of the following types of standpipe systems contains unpressurized air in pipes and has no permanent water supply?

According to the first essential principle of negotiation, it is important to try to separate:

A) Opinions from facts. B) Objective from subjective criteria. C) The people from the problem. D) The staff into smaller groups.

The frequency spectrum for most EMG signals recorded with surface electrodes is

A) 10-100 Hz B) 20-200 Hz C) 20-1000 Hz D) 20-500 Hz